Is the bezel areound the navi screen actually attached to the screen like it is on the non navi models, or are the the vents and the bezel a seperate piece from the navi screen?
I was thinking if it is just a frame w/ the ac vents, would it be possible to use the navi bezel on a non navi so that you could custom fit an aftermarket touch screen in place of the non navi headunit? I think this would be better than having a factory headunit and an aftermarket above the "not an ashtray"

 

If I recall correctly it's all one piece.